Debuted in 1985 to replace the Series 500. Still carrying passengers today. 10-car set. 4 doors. A handsome older man. Recently into bonsai. Favorite food is tempura soba.

Debuted in 1986 for the Maki-Minami Line. 2-car set. 4 doors. Also a handsome older man and the younger brother of the Series 800. Enjoys reading. Favorite food is tonjiru (pork soup).

Debuted in 1990 for through-service to the Ryotsu Metro Ryotsu Line. (As of 2024, also runs on the Shinto High-Speed Railway and Tatsutetsu Tatsuhama Lines.) A young man. Favorite food is miso soup.

The eldest daughter. Debuted in 2020 ahead of the Shinto extension of the Nisaki Main Line. 10-car set. 4 doors. Also runs through to the aforementioned lines. A young girl. Favorite food is omurice.

The second daughter. Debuted in 2021 for the Kamamachi Line. 4-car set. 4 doors. Replaced the Series 300. A little girl. Close with Series 2000. Favorite food is Neapolitan pasta.

Debuted in 1993 as a next-generation test vehicle. Equipped with various new technologies. 10-car set. 4 doors. A young man. Wears glasses. Favorite drink is orange juice.

Debuted in 2021 with the Shinto extension of the Nisaki Main Line. 10-car set. 4 doors. Equipped with dual seats. A femboy. Works as a model. Favorite drink is a caffè latte.

Debuted in 2023 to commemorate the 80th anniversary of Nisaki Electric Railway. Features the traditional Kamamachi Blue livery. 10-car set. 4 doors. Also runs through to the aforementioned lines. A girl with glasses. Actually a beauty. Favorite food is salt ramen.

Introduced in 2024 with the opening of the Shinto High-Speed Railway. (Also runs through to Ryotsu Metro and Tatsutetsu lines.) The flagship of Nisaki Electric Railway. 10-car set. 4 doors. A refined, high-class girl (ojou-sama). Enjoys reading and dolls. Favorite food is stew.

The third daughter. Debuted in 2026 with the opening of the Nanaminato Line. Features longitudinal seating and is based on the Keisei Series 3200, but with 4 doors. Available in 4-car and 6-car sets, which can be coupled to form a 10-car set for the Nisaki Line. (Note: Not compatible with reciprocal through-service.) A little girl. Wears a ribbon on the upper left. Favorite food is udon.